CN206906149U - A kind of cement base thin plate axis pulling experiment device - Google Patents
A kind of cement base thin plate axis pulling experiment device Download PDFInfo
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- CN206906149U CN206906149U CN201720821078.9U CN201720821078U CN206906149U CN 206906149 U CN206906149 U CN 206906149U CN 201720821078 U CN201720821078 U CN 201720821078U CN 206906149 U CN206906149 U CN 206906149U
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Abstract
Formed the utility model discloses a kind of cement base thin plate axis pulling experiment device, including in two parts main unit of symmetric relation, include ball pivot, tripod, D-shaped connector and fixture per portion body unit；Wherein：Ball pivot one end is connected by testing machine loading head with testing machine, and the drift angle end connection of the ball pivot other end and tripod, the base end of tripod is connected by D-shaped connector with fixture；Fixture includes the clamping plate and caging bolt that two panels is oppositely arranged, and caging bolt is set through two panels clamping plate, and caging bolt is used for spacing to experiment test specimen progress；Cement base thin plate axis pulling experiment device provided by the utility model has simple to operate, and test specimen damage is small during test, and stress state when can preferably react test specimen tension, the advantages of making test result more accurate.
Description
Technical field
Axis pulling experiment technical field is the utility model is related to, more particularly to a kind of cement base thin plate axis pulling experiment device.
Background technology
Cement-based material axial tensile strength and limit stretch value are the weights of Mechanical Properties of Cement-based Materials and deformation performance
Want parameter.Fiber-reinforced mortar/the concrete being widely studied at present needs to be measured its tensile strength, to evaluate its power
Learn performance.In addition, structure particularly is directly related to the structures such as concrete for hydraulic structure and dam concrete, concrete tensile property
Security.Therefore, the test of correct response Mechanical Properties of Cement-based Materials turns into the important step for controlling its property.Common
Analysis of Concrete Tensile experiment has three kinds：Uniaxial direct tension, bending test, split drawing experiment.Split drawing experiment in, test specimen be in two to should
Power state, when test specimen is single load bearing in curved drawing and axis pulling experiment, but curved drawing test specimen section stress is not triangular in shape point
Cloth, so axle draws stress more simple, it is ideal Analysis of Concrete Tensile Strength Testing Methods.
Tested for concrete in uniaxial direct tension, Specimen Shape and the different of method of clamping influence very on result of the test
Greatly.Clamp method widely used at present can be divided into external clamping, built-in type and adhesive type three basic forms of it.The test specimen of external clamping
Mostly thin plate test specimen, test specimen frictionally transmit pulling force, but this method makes holding position concrete be in two dimensional stress state,
Test specimen easily destroys in holding position.Built-in type is relatively to be difficult to ensure card embedded bar in test piece end pre-embedded bolt or reinforcing bar, kind mode
Or the accurate centering of bolt, and the transmission of stress is extremely complex, it is impossible to ensure uniform tension state of the test specimen in total length.With it is outer
Clip is compared with built-in type, and the stress of adhesive type test piece end transmits preferably, but stress concentration is still more obvious, and binding agent
It can not reuse, experimentation cost is higher.
To sum up, existing cement base thin plate axis pulling experiment device, exists and is easily destroyed test specimen, cumbersome, it is impossible to compared with
The problem of stress state during good reaction test specimen tension.
Utility model content
The purpose of this utility model is to provide a kind of cement base thin plate axis pulling experiment device, is deposited with solving above-mentioned prior art
The problem of, have simple to operate, test specimen damage is small during test, and stress shape when can preferably react test specimen tension
State, the advantages of making test result more accurate.
To achieve the above object, the utility model provides following scheme：
The utility model provides a kind of cement base thin plate axis pulling experiment device, and the axis pulling experiment device is by symmetric relation
Two parts main unit forms, and includes ball pivot, tripod, D-shaped connector and fixture per portion body unit；Wherein：
Described ball pivot one end is connected by testing machine loading head with testing machine, the ball pivot other end and the tripod
Drift angle end is connected, and the base end of the tripod is connected by D-shaped connector with the fixture；It is relative that the fixture includes two panels
The clamping plate and caging bolt of setting, the caging bolt pass through clamping plate described in two panels to set, and the caging bolt is used for experiment
Test specimen carries out spacing.
Preferably, the tripod is equilateral triangle steel construction, including is arranged to two braces and the setting of two hypotenuses
For a cylindrical bar on base.
Preferably, the clamping plate includes integrally formed rectangular steel plates and trapezoidal steel plate, and the rectangular steel plates are positioned at described
At the long base of trapezoidal steel plate, the length of the rectangular steel plates and the equal length on the trapezoidal long base of steel plate.
Preferably, the caging bolt is arranged to two rows, and caging bolt described in two rows is symmetricly set in the trapezoidal steel plate
On, the hypotenuse for often arranging the line of centres trapezoidal steel plate adjacent thereto of the caging bolt is parallel.
Preferably, the D-shaped connector includes the shank of bolt of U-shaped crude iron ring and bolt in the U-shaped crude iron ring openend,
The arc end of the U-shaped crude iron ring is sheathed on the outside of the cylindrical bar, and the openend of the U shapes crude iron ring passes through described
Shank of bolt is connected with the rectangular steel plates.
Preferably, the D-shaped connector is equidistantly disposed between the cylindrical bar and the rectangular steel plates
It is multiple.
Preferably, spaced set has multiple shallow slots successively on the cylindrical bar, and the U-shaped crude iron ring is connected in described
In shallow slot.
Preferably, it is provided with rubber blanket on the inside of the clamping plate.
The utility model achieves following advantageous effects relative to prior art：
1st, cement base thin plate axis pulling experiment device provided by the utility model, the retained part of test specimen two ends is made and extended out
Shape horn structure, using on clamping plate set bolt come the hypotenuse of clamping test specimen two and combine clamping plate outer clip compound clamping side
Formula, it is easy to operate, traditional external clamping can be effectively improved to destroying the defects of serious at specimen holder；
2nd, cement base thin plate axis pulling experiment device provided by the utility model, compared with built-in type, its Path of Force Transfer is simple
Clearly, it can guarantee that test specimen tension in length range；Compared with adhesive type, the influence of stress concentration can be effectively reduced, and be not required to
Bonding agent is wanted, the trouble of cleaning fixture is not only avoided, also saves experimentation cost；
3rd, cement base thin plate axis pulling experiment device provided by the utility model, answering when can preferably react test specimen tension
Power state, the uniaxial direct tensile performance of cement-based material is effectively determined, makes test result more accurate, can be research cement-based material
Mechanical property provides more structurally sound technical support.
4th, cement base thin plate axis pulling experiment device provided by the utility model, connect between each device it is reliable, rationally, installation,
Test is easy.The setting of wherein ball pivot can reduce the influence of torsion, can effectively apply axial load, clamping plate can be according to test specimen
Size is changed, can clamping dimension scope it is wide.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, without having to pay creative labor, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the forward structure schematic diagram of cement base thin plate axis pulling experiment device in the utility model；
Fig. 2 is the partial side structural representation of cement base thin plate axis pulling experiment device in the utility model；
Fig. 3 is the forward structure schematic diagram of the clamping plate of cement base thin plate axis pulling experiment device in the utility model；
Fig. 4 is the decomposition texture schematic diagram of the D-shaped connector of cement base thin plate axis pulling experiment device in the utility model；
Fig. 5 is the structural representation of the cylindrical bar of the tripod of cement base thin plate axis pulling experiment device in the utility model
Figure；
In figure：1- testing machines loading head, 2- ball pivots, 3- braces, 4- cylindrical bars, 5-D shapes connector, 6- clamping plates, 7- limits
Position bolt, 8- experiments test specimen, 9-U shape crude irons ring, 10- shanks of bolt, 11- rectangular steel plates, the trapezoidal steel plates of 12-, 13- shallow slots.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
The purpose of this utility model is to provide a kind of cement base thin plate axis pulling experiment device, to solve existing for prior art
Problem.
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings and tool
Body embodiment is described in further detail to the utility model.
The present embodiment provides a kind of cement base thin plate axis pulling experiment device, can reduce experiment by the axis pulling experiment device
Damage of the test specimen in axis pulling experiment, and stress state when can preferably react test specimen tension, make test result more smart
It is accurate；
As Figure 1-5, the cement base thin plate axis pulling experiment device that the present embodiment provides is by two parts in symmetric relation
Main unit forms, and includes ball pivot 2, tripod, D-shaped connector 5 and fixture per portion body unit；Wherein, the one end of ball pivot 2 leads to
Overtesting machine loading head 1 is connected with testing machine (not depending on going out in figure), the drift angle end connection of the other end of ball pivot 2 and tripod, triangle
The base end of frame is connected by D-shaped connector 5 with fixture；Fixture then includes the clamping plate 6 and caging bolt 7 that two panels is oppositely arranged,
Caging bolt 7 is set through two panels clamping plate 6, and caging bolt 7 is spacing for being carried out to experiment test specimen 8.
Tripod is specifically arranged to equilateral triangle steel construction in the present embodiment, two braces 3 are arranged to triangle
Two hypotenuses, cylindrical bar 4 are arranged to the base of triangle.Enough clamping plates 6 into fixture are by integrally formed rectangular steel plates 11 and ladder
Shape steel plate 12 is formed, and rectangular steel plates 11 are located at the long base of trapezoidal steel plate 12, the length of rectangular steel plates 11 and trapezoidal steel plate 12
The equal length on long base；Caging bolt 7 is provided with two rows, and two row's caging bolts 7 are symmetricly set on trapezoidal steel plate 12, often arranged
The hypotenuse of the line of centres of caging bolt 7 trapezoidal steel plate 12 adjacent thereto is parallel；In addition, the inner side of two clamping plate 6 is additionally provided with
Rubber blanket (not depending on going out in figure), further to reduce damage of the clamping plate 6 to test specimen.
D-shaped connector 5 includes U-shaped crude iron ring 9 and bolt in the shank of bolt 10 of the openend of U-shaped crude iron ring 9, U-shaped crude iron ring
9 arc end is sheathed on the outside of cylindrical bar 4, and the openend of U-shaped crude iron ring 9 is connected by shank of bolt 10 and rectangular steel plates 11
Connect, bolt hole be specifically oppositely arranged in the side wall of the openend of U-shaped crude iron ring 9, upper bolt hole is also provided with two clamping plates 6,
Shank of bolt 10 is sequentially passed through into the bolt hole on U-shaped crude iron ring 9 and clamping plate 6, you can realize the openend of U-shaped crude iron ring 9 and clamping plate 6
Be fixedly connected.
In the present embodiment, D-shaped connector 5 is specifically arranged to 3, it is equidistant successively on the cylindrical bar 4 of tripod
It is provided with 3 shallow slots 13, the U-shaped crude iron ring 9 on D-shaped connector 5 is connected in shallow slot 13 successively, is existed to limit U-shaped crude iron ring 9
Slided on cylindrical bar 4；
Cement base thin plate axis pulling experiment device provided by the utility model, the size of all parts can be according to experiment test specimen
8 flexible in size selection, during concrete application, first the both ends for testing test specimen 8 are respectively set to limit with two rows before experiment
Position bolt 7 be engaged bell shape, that is to say, that experiment the bell-mouthed hypotenuse in the both ends of test specimen 8 also respectively with trapezoidal steel plate 12
Hypotenuse is parallel, and caging bolt 7 is sequentially arranged in the outside of two hypotenuses of experiment test specimen 8, and examination can be achieved in such setting
Test that test specimen 8 is spacing axially outward, ensure on the premise of experiment test specimen 8 is not by too big fixture chucking power damage, to try experiment
Part 8 is fixed, and is not in the phenomenon of stress concentration, makes test result more accurate.
Based on above-mentioned cement base thin plate axis pulling experiment device, the utility model is specifically carrying out cement base thin plate axis pulling experiment
When, including tests below step：
Step 1: experiment test specimen 8 both ends are made to the shape to match with the arrangement mode of the caging bolt 7 on fixture,
The bell shape that the both ends mentioned in said structure extend out, test specimen two ends are enable to be limited 7 spacing fixation of bolt；
Step 2: the middle part for testing test specimen 8 is polished smooth, and is carried out with resin levelling, it is answering for 50mm to paste length
Become piece, foil gauge is connected into deformeter by wire, to measure the ultimate tensile strength of experiment test specimen 8；
Step 3: experiment test specimen 8 both ends are respectively arranged in two main units of cement base thin plate axis pulling experiment device
Clamping plate 6 between, install caging bolt 7 successively, and screw caging bolt 7, experiment test specimen 8 fixed；
Step 4: testing machine loading head 1 of the testing machine respectively with two main units is connected, starts testing machine and added
Experiment is carried, during experiment, the software systems that the load-deformation curve of test specimen is configured by testing machine are acquired.
The utility model applies specific case and principle of the present utility model and embodiment is set forth, and the above is real
The explanation for applying example is only intended to help and understands method and its core concept of the present utility model；Meanwhile for the general of this area
Technical staff, according to thought of the present utility model, there will be changes in specific embodiments and applications.To sum up,
This specification content should not be construed as to limitation of the present utility model.
Claims (8)
- A kind of 1. cement base thin plate axis pulling experiment device, it is characterised in that：The axis pulling experiment device is by two of symmetric relation Divide main unit composition, include ball pivot, tripod, D-shaped connector and fixture per portion body unit；Wherein：Described ball pivot one end is connected by testing machine loading head with testing machine, the drift angle of the ball pivot other end and the tripod End connection, the base end of the tripod is connected by D-shaped connector with the fixture；The fixture is oppositely arranged including two panels Clamping plate and caging bolt, the caging bolt pass through described in two panels clamping plate set, the caging bolt be used for test test specimen Carry out spacing.
- 2. cement base thin plate axis pulling experiment device according to claim 1, it is characterised in that：The tripod is equilateral three Angular steel construction, including be arranged to two braces of two hypotenuses and be arranged to a cylindrical bar on base.
- 3. cement base thin plate axis pulling experiment device according to claim 2, it is characterised in that：The clamping plate include one into The rectangular steel plates of type and trapezoidal steel plate, the rectangular steel plates are located at the long base of the trapezoidal steel plate, the rectangular steel plates Length and the equal length on the trapezoidal long base of steel plate.
- 4. cement base thin plate axis pulling experiment device according to claim 3, it is characterised in that：The caging bolt is arranged to Two rows, caging bolt described in two rows are symmetricly set on the trapezoidal steel plate, often arrange the line of centres of the caging bolt with The hypotenuse of its adjacent trapezoidal steel plate is parallel.
- 5. cement base thin plate axis pulling experiment device according to claim 4, it is characterised in that：The D-shaped connector includes U Shape crude iron ring is sheathed on the circle with shank of bolt of the bolt in the U-shaped crude iron ring openend, the arc end of the U-shaped crude iron ring The outside of cylindrical rod, the openend of the U-shaped crude iron ring are connected by the shank of bolt with the rectangular steel plates.
- 6. cement base thin plate axis pulling experiment device according to claim 5, it is characterised in that：The D-shaped connector is in institute State equidistantly be disposed between cylindrical bar and the rectangular steel plates it is multiple.
- 7. cement base thin plate axis pulling experiment device according to claim 6, it is characterised in that：On the cylindrical bar successively Spaced set has multiple shallow slots, and the U-shaped crude iron ring is connected in the shallow slot.
- 8. cement base thin plate axis pulling experiment device according to claim 7, it is characterised in that：It is provided with the inside of the clamping plate Rubber blanket.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720821078.9U CN206906149U (en) | 2017-07-08 | 2017-07-08 | A kind of cement base thin plate axis pulling experiment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720821078.9U CN206906149U (en) | 2017-07-08 | 2017-07-08 | A kind of cement base thin plate axis pulling experiment device |
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| CN206906149U true CN206906149U (en) | 2018-01-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271268A (en) * | 2017-07-08 | 2017-10-20 | 中铁十六局集团置业投资有限公司 | A kind of cement base thin plate axis pulling experiment device and its test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271268A (en) * | 2017-07-08 | 2017-10-20 | 中铁十六局集团置业投资有限公司 | A kind of cement base thin plate axis pulling experiment device and its test method |
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